×

Method and circuit arrangement in an electronic control unit of a motor vehicle for detecting faults

  • US 9,174,651 B2
  • Filed: 07/31/2014
  • Issued: 11/03/2015
  • Est. Priority Date: 02/03/2012
  • Status: Active Grant
First Claim
Patent Images

1. An arrangement for detecting faults in an electronically controlled drive system of a motor vehicle, comprising:

  • an electronic control unit for controlling a drive function of the motor vehicle, the electronic control unit having a first function-controlling level and a second monitoring level, whereinboth the first function-controlling level and second monitoring level of the electronic control unit acquire at least an accelerator pedal position as an input signal,the first function-controlling level of the electronic control unit determines a quantity proportional to a desired longitudinal acceleration and transmits the determined quantity as an input signal to a plausibility block of the second level of the electronic control unit,the plausibility block of the second level of the electronic control unit implements at least one fault detection program to detect a fault when a defined relationship is not satisfied between the accelerator pedal position and/or an accelerator pedal position change and the determined quantity proportional to the desired longitudinal acceleration,when no fault is detected, the drive function is implemented, andwhen a fault is detected, an emergency operation of the drive function is implemented by the electronic control unit, or the electronic control unit is switched off completely.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×